PHB, page 272
Resistance
0-level (Cantrip) Abjuration
Casting Time: 1 action
Range/Area: Touch
Components: V, S, M
Materials: A miniature cloak
Duration: Concentration, up to 1 minute
You touch one willing creature. Once before the spell ends, the target can roll a d4 and add the number rolled to one saving throw of its choice. It can roll the die before or after making the saving throw. The spell then ends.
At higher levels: The range of the spell becomes 10 feet once you reach 5th level, and increases by 10 feet at 11th level (20 feet) and again at 17th level (30 feet).
Available for: Artificer, Cleric, Druid